\begin{table}[t!]
\centering
\caption{Custom dictionary for open question attribute importance \label{tab:dictionary-tab}} 
\begingroup\small
\renewcommand{\arraystretch}{0.8}
\begin{tabular}{lp{12.5cm}}
  \toprule
 \textbf{Attribute} & \textbf{Keywords and Phrases}\\ 
  \midrule
\,\,\,Old age & elderly, age, over\_65, senior\_citizen, elder, elders, old, over\_70\\ 
\,\,\,Life expectancy & young, life\_expectancy\\ 
\,\,\,Occupation & occupation, job, doctor, doctors, work, workers, profession, nurse, physician, frontline, career, teacher, teachers, essential, world\_leaders, system\_relevant, police\\ 
\,\,\,Preconditions & preconditions, precondition, health, conditions, history, immune, disabled, illness, pre-illness, pre-existing, ill, at-risk, comorbidities, comorbid, chronic\\ 
\,\,\,Has children & has\_children, children\_to\_raise, had\_kids, have\_children, with\_children, with\_kids, has\_younger\_children, has\_small\_children, family, dependent, parent, dependents, parents, mother, father, family\_man, having\_children, age\_of\_children\\
\,\,\,Registration & registration, registered, sign\_up, first\_come, enrolled\\
\,\,\,Exposure & exposure, contact, contacts\\
\,\,\,Productivity & merit, contribution, education, service, value\_in\_society, benefit\_to\_the\_general\_public, productivity, function\_for\_society, knowledge, who\_contribute, expected\_gains\\
\,\,\,Citizenship & citizen, us\_born, american, americans, citizenship, nationality, country, german, germans, brazilian, brazilians, polish, pole, italian, italians\\
\,\,\,Income & income, purchasing\_power\\
\,\,\,Express interest & want\_it, want\_the\_vaccine, everyone\_who\_wants\\
\,\,\,Gender & male, female, gender \\


\\
  
   \bottomrule
\end{tabular}
\endgroup
\end{table}